Theologians refer to the Christian ethic of love of God and neighbor as a law of love that signifies the sacrificial quality required of those who, in the name of Jesus Christ, seek the good of their neighbors. (religion-online.org)
But the idea of two distinct and interrelated levels of morality, the ultimate ethic of love and the relative ethic of law, are clearly laid down in the Christian system of ethics. (religion-online.org)